Apparatus

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sensors Mode-S transponder

78157D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-207J · BOEING 787-9 Dreamliner

Hex
78157D
Octal
36012575
Decimal
7,869,821
Country
CN
Tail
B-207J
Type
B789
No current signal · last broadcast 1d ago
Flights observed
70
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 78157D.

Country allocation

The ICAO 24-bit address 78157D falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
CHH7921 Hainan Airlines 17 2026-05-08
CHH7922 Hainan Airlines 13 2026-05-09
CHH7396 Hainan Airlines 3 2026-05-28
CHH7395 Hainan Airlines 3 2026-05-26
CHH7974 Hainan Airlines 2 2026-04-27
CHH7973 Hainan Airlines 2 2026-04-27
CHH790 Hainan Airlines 2 2026-04-25
CHH789 Hainan Airlines 2 2026-04-25
CHH775 Hainan Airlines 2 2026-04-22
CHH7711 Hainan Airlines 2 2026-04-24
CHH7709 Hainan Airlines 2 2026-05-16
CHH7707 Hainan Airlines 2 2026-05-21
CHH7704 Hainan Airlines 2 2026-05-21
CHH761 Hainan Airlines 2 2026-05-21
CHH472 Hainan Airlines 2 2026-05-17
CHH471 Hainan Airlines 2 2026-05-17
CHH776 Hainan Airlines 1 2026-04-23
CHH7722 Hainan Airlines 1 2026-04-20
CHH7716 Hainan Airlines 1 2026-05-13
CHH7714 Hainan Airlines 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH7714 SZX → PEK May 29, 13:50 UTCMay 29, 14:00 UTC10m
2026-05-29 CHH7025 HAK → SZX May 29, 09:30 UTCMay 29, 10:00 UTC30m
2026-05-28 CHH7396 HGH → SZX May 28, 12:40 UTCMay 28, 13:05 UTC25m
2026-05-26 CHH7396 HGH → SZX May 26, 11:50 UTCMay 26, 12:10 UTC20m
2026-05-26 CHH7395 SZX → HGH May 26, 07:10 UTCMay 26, 07:19 UTC10m
2026-05-25 CHH7396 HGH → SZX May 25, 12:40 UTCMay 25, 13:00 UTC20m
2026-05-25 CHH7395 SZX → HGH May 25, 06:35 UTCMay 25, 06:45 UTC10m
2026-05-23 CHH7395 SZX → HGH May 23, 06:35 UTCMay 23, 06:45 UTC10m
2026-05-22 CHH762 BUD → SZX May 22, 10:10 UTCMay 22, 13:15 UTC3h 5m
2026-05-21 CHH761 SZX → BUD May 21, 23:45 UTCMay 22, 05:45 UTC6h 0m
2026-05-21 CHH761 SZX → BUD May 21, 18:35 UTCMay 21, 18:50 UTC15m
2026-05-21 CHH7707 PEK → SZX May 21, 13:30 UTCMay 21, 13:50 UTC20m
2026-05-21 CHH7707 PEK → SZX May 21, 11:05 UTCMay 21, 11:20 UTC15m
2026-05-21 CHH7704 SZX → PEK May 21, 04:30 UTCMay 21, 04:40 UTC10m
2026-05-21 CHH7704 SZX → PEK May 21, 02:05 UTCMay 21, 02:15 UTC10m
2026-05-17 CHH472 CAI → SZX May 17, 19:01 UTCMay 17, 19:10 UTC10m
2026-05-17 CHH472 CAI → SZX May 17, 13:45 UTCMay 17, 16:35 UTC2h 50m
2026-05-17 CHH471 SZX → CAI May 17, 02:00 UTCMay 17, 05:25 UTC3h 25m
2026-05-16 CHH471 SZX → CAI May 16, 18:15 UTCMay 16, 18:25 UTC10m
2026-05-16 CHH7709 PEK → SZX May 16, 10:20 UTCMay 16, 10:35 UTC15m
2026-05-15 CHH492 BRU → PEK May 15, 11:35 UTCMay 15, 17:40 UTC6h 4m
2026-05-14 CHH491 PEK → BRU May 14, 21:40 UTCMay 15, 04:05 UTC6h 25m
2026-05-13 CHH7716 TNA → SZX May 13, 12:35 UTCMay 13, 12:45 UTC10m
2026-05-13 CHH7709 PEK → SZX May 13, 10:15 UTCMay 13, 10:35 UTC20m
2026-05-09 CHH7922 BRU → PVG May 9, 10:30 UTCMay 9, 16:35 UTC6h 5m
2026-05-08 CHH7921 PVG → BRU May 8, 23:00 UTCMay 9, 06:00 UTC7h 0m
2026-05-07 CHH7922 BRU → PVG May 7, 10:10 UTCMay 7, 16:05 UTC5h 55m
2026-05-06 CHH7921 PVG → BRU May 6, 23:10 UTCMay 7, 06:20 UTC7h 10m
2026-05-05 CHH7922 BRU → PVG May 5, 10:15 UTCMay 5, 16:06 UTC5h 50m
2026-05-04 CHH7921 PVG → BRU May 4, 23:15 UTCMay 5, 06:20 UTC7h 5m
2026-05-02 CHH7922 BRU → PVG May 2, 10:20 UTCMay 2, 16:25 UTC6h 5m
2026-05-01 CHH7921 PVG → BRU May 1, 23:15 UTCMay 2, 05:45 UTC6h 30m
2026-04-30 CHH7922 BRU → PVG Apr 30, 10:25 UTCApr 30, 16:35 UTC6h 10m
2026-04-29 CHH7921 PVG → BRU Apr 29, 23:00 UTCApr 30, 05:35 UTC6h 34m
2026-04-28 CHH7476 TFU → SZX Apr 28, 15:55 UTCApr 28, 16:10 UTC15m
2026-04-28 CHH7475 SZX → TFU Apr 28, 08:10 UTCApr 28, 08:20 UTC10m
2026-04-27 CHH7974 LAX → PVG Apr 27, 23:00 UTCApr 27, 23:10 UTC10m
2026-04-27 CHH7974 LAX → PVG Apr 27, 11:50 UTCApr 27, 15:35 UTC3h 45m
2026-04-27 CHH7973 PEK → KJA Apr 27, 01:50 UTCApr 27, 06:05 UTC4h 15m
2026-04-26 CHH7973 PEK → KJA Apr 26, 18:10 UTCApr 26, 18:25 UTC15m
2026-04-25 CHH790 VIE → SZX Apr 25, 19:10 UTCApr 25, 19:25 UTC15m
2026-04-25 CHH790 VIE → SZX Apr 25, 09:00 UTCApr 25, 12:15 UTC3h 15m
2026-04-25 CHH789 SZX → VIE Apr 25, 04:15 UTCApr 25, 05:45 UTC1h 30m
2026-04-24 CHH789 SZX → VIE Apr 24, 18:10 UTCApr 24, 18:20 UTC10m
2026-04-24 CHH7711 PEK → SZX Apr 24, 13:10 UTCApr 24, 13:30 UTC20m
2026-04-24 CHH7711 PEK → SZX Apr 24, 10:40 UTCApr 24, 11:00 UTC20m
2026-04-23 CHH776 SYD → HAK Apr 23, 11:20 UTCApr 23, 18:40 UTC7h 19m
2026-04-22 CHH775 HAK → SYD Apr 22, 20:30 UTCApr 23, 04:25 UTC7h 55m
2026-04-22 CHH775 HAK → SYD Apr 22, 05:50 UTCApr 23, 04:25 UTC22h 35m
2026-04-20 CHH7722 PVG → SZX Apr 20, 08:05 UTCApr 20, 09:15 UTC1h 10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-207J page for operator, model, and routing details .

Mode-S 78157D frequently asked

What is Mode-S code 78157D?
78157D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-207J.
Where is Mode-S 78157D registered?
Mode-S code 78157D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78157D broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78157D, octal 36012575, decimal 7,869,821.
What flights does 78157D operate?
Mode-S 78157D has broadcast 20 distinct callsigns, including CHH7921, CHH7922, CHH7396, CHH7395, CHH7974.